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85 lines
2.6 KiB
Markdown
85 lines
2.6 KiB
Markdown
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[](https://github.com/marketplace/actions/arduino_ci)
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[](https://github.com/RobTillaart/Angle/actions/workflows/arduino-lint.yml)
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[](https://github.com/RobTillaart/Angle/actions/workflows/jsoncheck.yml)
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[](https://github.com/RobTillaart/Angle/blob/master/LICENSE)
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[](https://github.com/RobTillaart/Angle/releases)
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# Angle
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Arduino library for basic math for Angles in degrees, minute, seconds and ten-thousands.
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## Description
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Angle is an Arduino class to print, compare and do basic maths with angles
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in degrees, minutes seconds and ten-thousands. The class was created to be
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able to print an angle with minutes and seconds instead of as a floating point
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or radians.
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To make the library more useful basic maths ( + - \* / )
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and comparisons ( == != < <= > >= ) are added to the class.
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The library implements the Printable interface, allowing one to call
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**Serial.println(angle)** or **SD.print(angle)**.
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## Interface
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### Constructors
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- **Angle(int dd = 0, int mm = 0, int ss = 0, int tt = 0)** create an Angle, default is zero.
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- **Angle(double alpha)** create an Angle from a double.
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- **Angle(char \* str)** create an Angle from a string e.g. "45.31234".
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### base
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- **int sign()** returns -1 or 1.
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- **int degree()** returns # degrees.
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- **int minute()** returns # minutes.
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- **int second()** returns # seconds.
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- **int tenthousand()** returns # ten-thousands of a second.
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### Conversions
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- **double toDouble()** returns the angle as a double (0..360.0, float on UNO).
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- **double toRadians()** returns the angle in radians (0..TWO_PI).
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- **void fromRadian(double rad)** create an angle from radians.
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### Equality operators
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The library supports equality operator "==", "!=", "<" "<=" ">" and ">=" .
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### Math operators
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- **negate** returns -angle.
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- **addition** and **subtract** add angles to angles.
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- **multiplication** and **division** multiply an angle with a double.
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- **ratio** ratio = Angle/Angle.
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## Operation
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See examples.
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## Note
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The library has not been tested extensively and it could still contain
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bugs. Especially the constructor does not check input so use it carefully.
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## Future
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- improve documentation
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- test more
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- optimize code where possible
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